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Quattro DC Troubleshooting
Name Description
Possible Causes & Corrective Action
ME Cont Pwr
Motor contactor power was
removed while the drive was
commanding it to be
energized.
Contactor Problem
Check motor contactor power
ME Pwr Avail
Motor contactor power was
not available when the drive
was commanded to start.
Contactor Problem
Check motor contactor power
Module x IGBT
A de-saturation condition has
been detected on the specified
motor side IGBT module.
Incorrect Parameter Settings
Check RATED MOTOR CURR (A6),
ARMATURE VOLTS (A6), FULL FLD AMPS
(A6), WEAK FLD AMPS (A6), and FLUX
CONFIRM LEVEL
Motor Problem
Check motor armature and wiring for short
circuits
Monitor Rev
The revision level of the
monitor data structure shared
between the line and motor
side processors does not
match.
Software Problem
Re-load proper software into both processors
MS Size
The motor side power
converter has detected that
the power bridge and current
sensors, do not match.
Hardware Mismatch
Size of the power bridge does not match the
rating as defined on the cube ID board.
Check for correct Cube ID board located on A4
board
MTR Data Flt
Motor parameters checksum
is invalid.
Parameters Corrupted
Check & re-enter Motor Side (A4) parameters
and power cycle the drive
If re-occurs, replace Drive Control board A2
Mtr Overload
(alarm)
The motor had exceeded the
user defined motor overload
curve.
Verify Overload Curve Parameters
Check both OVLD START LEVEL (A5) and
OVLD TIME OUT (A5) parameters
.
Excessive Field Weakening
Verify that FULL FLD AMPS (A5) and WAEK
FLD AMPS (A5) are set correctly so that motor
can produce rated torque
Verify that motor armature voltage is correct
for applied speed and load
Accurate Motor Parameters
Verify motor nameplate values are entered
correctly
Excessive Current Draw
Decrease accel/decel rate
Verify elevator counterweights
Verify mechanical release of elevator brake
Motor Problem
Check for motor failure
Check for faulty motor wiring
No Drv
Handshake
(operator serial
link error)
The operator lost
communications with the
drive’s control board.
Bad Connector Connection
Remove and re-seat the operator in its cradle.
If re-occurs, the operator or the drive’s control
board may need to be replaced.
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